Weather strip



Feb. 6, 1934. H, H, WHlTE 1,946,251

WEATHER STRI;

Filed May 20, 1932 2 Sheets-Sheet 1 fiH/mr fiusrow W114 TED Feb. 1934-. w -u 1,946,251

WEATHER STRI P Filed May 20, 1932 2 Sheets-Sheet 2 Patented Feb. 6, 1934 ETED STATES PATENT OFFICE WEATHER STRIP Application May 20, 1932. Serial No. 612,573

Claims.

The improved form of Weatherstrip forming the construction of the present invention is designed specially for windows, and provides a strip which will efiiciently take care of expansion and congjjtraction between the window sash and the frame, while allowing a minimum of side play of the sash between the customary stops, thereby e1irninating rattling of the windows regardless of the clearance space between the sash and the stops, which clearance space varies according to the swelling of the sash frame, due to moisture.

A further object of this invention is to provide a Weatherstrip possessing the above characteristics, and which is positioned so as to at all times efiectively maintain an eiiicient protection against weather Without in any way interfering with the usual provision of grooves in the sash in which is customarily positioned the pul ley cords.

:g' It will be further understood that it is sometimes desirable and considered to be an advantage to install the window strip for the upper sash of a double hung window toward the out side rather than towards the parting strip. The

present invention provides a form of weatherstrip which may be installed, if desired, towards the outside of the upper sash, and furthermore, the invention provides a construction which reduces to a minimum the possibility of the nails which are used to secure the strips in position from pulling out the catching on the frame member as the sash is raised and lowered.

A still further object of the invention is to provide a strip of this character wherein the desirable and advantageous features of the strip are imparted to it at the factory, so that no dependency need may be placed upon the mere skill of the machanic for the successful operation of the sash and the efiiciency of the strip, particularly if) in view of the fact that its installation is sumciently simple so as to be obvious.

Briefly outlined, the present invention deals with a Weatherstrip construction which is formed of a pair of cooperating strip members suitably bent into cooperation by channels, the sides of which mutually interlock whil leaving a sufficient depth of clearance space to allow for the expansion and contraction of the window sash and frame without, however, impairing in an way the efiiciency of the strip construction.

Obviously, the specific forms of the strip construction may vary in accordance with the conditions of the particular installation.

In the accompanying drawings, there are represented various specific forms, which the construction may take,

Figure 1 representing a horizontal sectional view through a double hung window, showing one of the strip constructions installed toward the outside of the upper sash, rather than toward the parting strip.

Figures 2 and 3 are views similar to Figure 1, but illustrating the upper window only and illustrating modifications of the Weatherstrip construction.

Figure 4 is a view similar to the foregoing, but showing an installation on the parting strip side of the upper sash, and illustrating also a modified form of sash member that may be used in connection with the strips of Figures 1 and 2.

Figure 5 is a fragmentary detailed sectional view of a further modification.

Referring first to Figure 1, A represents the upper sash of a double hung window and B the lower sash thereof, the sash A operating between the stops C and the parting strip D, and the sash 13 operating between the parting strip D and the stop E. The frame is represented generally by F.

It will be seen that in this type of installation, the weather strip construction is the same for either sash, the sash being rabbeted along the edge as indicated at l to receive the cooperating parts of the Weatherstrip installation. This installation comprises the strip members 2 and 3.

The strip 2 may for convenience be designated a sash strip and 3 may be designated as a runway strip.

As will be apparent from this figure, the sash strip 2 is bent inwardly at 4, the sash A being suitably kerfed to receive this resulting flange and to hold the strip in position. The strip is then bent outwardly at 5 to form the portion 6 which extends over the depth of the rabbeted portion of the sash. The strip is then bent inwardly to form a channel 7 of suitable depth, the side 8 of which channel is bent back directly upon itself, as indicated at 9, and secured in the sash by the portion 10, the sash being kerfed to receive this portion or flange.

The runway strip 3 is bent to form a U-shaped channel 11, which is inverted with respect to the channel '7, the side 12 of which is adapted to closely interengage between the sides 6 and 8 of the channel '7. The sides 12 of the channel 11 fill the remaining space between the rabbeted portion 1 of the sash, and the stop, engaging the sash at the bend of the channel, and extending along the adjacent stop to form the channel side 13. To secure the runway strip in position, the stop therefor is suitably kerfed and the side 13 bent therein, as indicated at 14, forming a double bend and is then extended between the sash and the frame F as indicated at 15 to form a reinforcing member between the sash and the frame, for maintaining the interlocking channel parts in alignment, and to form a sliding surface for the sash.

It will be understood that the channels 7 and 11 are of sufficient depth to allow for maximum contraction and expansion of the sashes and frame without in any way impairing the efficiency of the action of the cooperating strip members.

The sash strip 2 may also be secured in position by nails or equivalent fastening means as indicated at 16 and 17. The form of the strip relieves the strain on these nails, and prevents any tendency for them to be pulled out as the sash is raised and lowered, especially when the end of the strip is secured to the sash.

A modified form of this strip is shown in Figure 2. In this form, the sash strip 2a is of a form generally similar to that described in Figure 1. However, the runway strip 3a is bent doubly throughout its extent except that the flange 18 is kerfed into the stop C and flange 19 is extended between the sash A and frame F. As before, the edge of the window is rabbeted to receive the cooperating parts, and the channels 7a and 11a are of sumcient depth to allow for the maximum expansion and contraction of the window sash and frame, without attendant disengagement between the sides 8a and 12a 01 the respective channels.

The form or" strip construction illustrated in Figure 2 is adapted to be installed on either upper or lower sash and the strip 2a may be held position by the nails or equivalent fastening means 16a and 17a in the manner entirely similar to the securing means of Figure l.

The form of strip shown in Figure 3, instead of the sash A being rabbeted, it is grooved as shown at as, in which groove are located the cooperating strips bent into a generally similar configuration to the forms already described. The sash strip 21 is bent to form relatively inverted channels 22 and 220. which are defined by the inwardly extending projection 23, formed from the strip 21 by bending the strip back upon itself, the said strip being bent further to form the flange 24 secured by a nail 25.

The sash strip 21 is also bent to form the flange 28 which is secured to the sash A by nail or other securing means 25a The cooperating runway strip 27 is secured by kerflng into the stop C, the resulting flange 28 ,iorming a bearing surface for the flange 26. The

strip is then bent inwardly to closely engage the sash strip, and is doubled back upon itself to produce a sufficient thickness of material to suitably fill the spaces between the two parts of the strip ooj construction so that the portions thereof will snugly engage. The result is that, as previously described, the channels 22 and 22a, which are relatively inverted with respect to each other receive the cooperating parts 23 and 29 of the strips, which continuously engage each other irre- 0. j other in accordance with the contraction and expansion of the sash and frame.

In Figure 4 there is illustrated a still further modified form, which is installed on the parting strip side of the sash. It will be seen that the form of this strip is in general analogous to the forms previously described, but in this modification, the runway strip 30 is not secured by kerfing, but it, of course, can be fastened with screws or nails 3111., or any other desired fastening means, which secure the strip 30 in position against the frame F and parting strip D. In the form shown in Figure 4, the strip 30 is made of comparatively heavy metal and is bent first at right angles to define the sides 31 and 32 and then back upon itself forming the side 33 defining the channel 34 between the sides 32 and 33.

The sash strip 35 is kerfed into the sash A by means of the flange 36, is then bent along the rabbeted portion of the sash as indicated at 37 and then doubled back to form the side 38 of the channel 39. The side 38 projects into the channel 34 and fits snugly therein. It is bent back upon itself as indicated at 40. The portion 33 of the strip 30 extends into the channel'39, and the advantageous results or" the previously decribed forms are obtained.

The strip 2a may have one end secured in the sashes as indicated by dotted lines 41, or it may be positioned as shown at 42 in full lines.

In the modification of Figure 5, the sash strip 43 is keried into the sash as indicated at i l, the sash being suitably rabbeted, as previously described and is secured in position by the nail or equivalent fastening device 45. The sash strip extends along the rabbeted wall of the sash to the runway edge thereof. It is then turned upwardly to form the U-shaped channel 46, the side 47 of which is doubled back upon itself at 48 to engage the runway strip 49.

This runway strip has edge portion 50 received in the channel 46 of the sash strip. It is then bent into the inverted U-shaped channel 51 and extends along the stop 52 into which the strip portion 53 is keried adjacent the runway for the sash. The portion 53 is doubled back upon itself as at 54, this latter portion extending .between the sash and lamb 55, whence it extends into the sash at 56, the sash being suitably rabbeted therefor. This portion 56 lies adjacent to the side 43 of the channel 46 of the sash strip, and is doubled back upon itself, to give requisite rigidity, as indicated at 57. It is then bent at substantially right angles to form the runway portion 58, which extends between the sash and jaznb in a manner analogous to that previously described.

It will be noted that the parts of the respective strips are secured in position by kerfing in the stops C and D without the use of nails in any fixed part to secure the parts in position. This enables the window sash to be readily removed from the frame when it i desired to do so, the parts of the strip being removed together. This removal is accomplished merely by first removing the stop E for the window sash B, and for the window A, the stop D is removed.

It is to be borne in mind that the construction of the Weatherstrip device herein set forth, in order to subserve the efficiency of the Weatherstrip actions of the complemental parts, deals with the problem of contraction and expansion of the window frame and sash in the direction of the plane of the sash. Moreover, the channel parts described in reference to certain of the Weatherstrip members may be characterized broadly as rib members, a channel of course being a hollow rib in effect. The problem of weatherstrip construction necessarily deals with the efficient air and dust, as well as moisture, ex-

cluding functions of the complemental members on the frame and movable sash.

According to the present invention as distinguished from the prior art, the greater the contraction of the sash in the Window frame, and by this I mean, particularly, contractions laterally across the width of the sash, the more efficient becomes the action of the Weatherstrip employed by me. This becomes evident when it is apparent that the rib or channel elements on the weatherstrips, upon contraction of the window, increase the length of the path that air or dust must follow in order to pass between the sash and the frame and should the contraction be so great that the channel or rib 8 in Figure 1, for instance, engages in the innermost portion of the space 11 in which it fits, the efficiency for stoppage of the passage of air and dust will have reached a maximum degree by the cooperation of said parts.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States, is:

l. A Weatherstrip construction of the class described for windows, comprising cooperating strips mounted on a window sash and frame, respectively, and forming relatively inverted channels having interengaging walls extending into each channel, the walls of one channel fitting between the walls of the other and being relatively movable in the plane of the sash for relative expansion and contraction of the sash and frame while maintaining contact between the said walls, the said walls becoming increasingly inter-engaged responsive to contraction of the sash.

2. A Weatherstrip construction of the class described for windows, comprising cooperating strips mounted on a window sash and frame, respectively, and bent to form oppositely extending substantially U-shaped channels having interengaging walls extending into each channel, the walls of one channel snugly engaging the walls of the other, the said channels being of a depth materially greater than the dimension of the channel in a direction parallel with said depth, to allow for relative expansion and con traction of the sash and frame while maintaining uninterrupted contact between the said walls of the channels, the said channels being disposed so as to be drawn relatively together upon contraction of the window sash.

3. A Weatherstrip construction of the character described, comprising the. combination with a window frame having the usual outer stop and parting strip, of sash strips and runway strips, means for securing the sash strips to window sashes, the runway strips being secured in the window frame, each sash being provided with a recess to receive the strips, the sash strip extending flatly against the side of the recess, then bent to form a channel, then being doubled back upon itself and extended flatly between the sash and frame, the runway strip having one edge closely fitting in the aforesaid channel, thence bent into a channel receiving the doubly bent portion of the sash strip, the runway strip extending flatly against the said frame and having a doubly bent portion received in a suitable groove to retain the same in position, the runway strip being then extended flatly between the sash and frame to provide a bearing surface for the sash, the runway strips being kerfed into the outer stop and parting strip, respectively.

4. A Weatherstrip construction of the character described, comprising cooperating strips, one of which is adapted to be mounted on a window sash and to form a sash strip, the other being adapted to be secured in position on the window frame to form a runway strip, the said sash strip extending flatly along the said sash which is suitably recessed to receive the strips, the sash strip being then bent into a channel and doubled back upon itself to form a channel wall of double thickness, the strip then being extended at substantially right angles between the sash and frame, the runway strip having one edge kerfed into the window frame and being bent to form a portion extending into the channel of the sash strip and defining in turn a channel receiving the doubly bent channel wall of the sash strip, the runway strip being doubled back upon itself to a point substantially even with the edge thereof and being then bent at substantially right angles to project between the sash and frame to form a bearing surface for the sash, the sash and strips being readily removable from the frame.

5. A Weatherstrip construction of the charac ter described comprising cooperating strips one of which is adapted to be mounted on a window sash and to form a sash strip, the other being adapted to be secured in' position on the window frame to form a runway strip, the said sash being recessed to receive the strips, the sash strip being secured to the sash adjacent one edge of the strip, thence being bent into the recess to form a channel having its walls closely engaging the walls of the recess, the sash strip being further bent to provide an inwardly extending flange bent substantially doubly upon itself, finally being bent at substantially right angles to form a flange between the sash and frame, securing means for the flange to hold it flatly against the sash, the runway strips being kerfed into the frame in a direction parallel with the runway of the sash and being bent to form a channel, a wall of which is received into the channel of the sash strip, the aforesaid doubly bent flange being received in the channel of the runway strip, the said runway strip being thence bent at right angles and extended between the sash and frame to provide a bearing surface for the sash, the kerfing enabling ready removal of the sash and strips from the frame, while preventing entry of air behind the strips. I

6. A Weatherstrip construction of the character described, comprising cooperating strips, one of which is adapted to be secured to a window sash, the other being adapted to be secured to a window frame to form a runway strip, the sash being suitably recessed to receive the strips, the sash strip being kerfed at one edge into the sash and secured against longitudinal displacement by fastening devices positioned so as to have a shearing force exerted thereon by contraction of the sash, thence bent at substantially right angles to lie flatly against the recess of the sash, then being bent back upon itself to form an open channel and finally doubled back again upon itself to provide a channel wall of suitable thickness, the runway strip being of substantially greater thickness than the sash strip, and being bent to form a channel for receiving the doubled portion of the sash strip contraction of said window sash serving to increasingly telescope said parts, and extending into the channel of the sash strip in telescopic relation, the said runway strip being positioned flatly against the frame and bent at substantially right angles to extend between the sash and frame to form a bearing surface for the sash, the strips being kerfed in position to enable ready removal of the window sash while eliminating use of fastening devices in position subject to strain and preventing entry of air behind the strip.

7. A Weatherstrip construction of the character described, comprising a pair of cooperating Weatherstrip members, one adapted to be secured to a. window sash, the other to a window frame, each of the said members being suitably bent to form interengaging tongue and groove portions respectively, said tongue and groove portions becoming increasingly engaged upon lateral contraction of the window sash, the said strip secured to the sash being provided with fastening means penetrating into the the strip being of a configuration adapted to relieve the securing means of strain as the sash is operated, and adapted to interlock. with the other strip upon contraction of the sash away from the frame.

8. A Weatherstrip construction of the character described, comprising a pair cooperating Weatherstrip members, each of which is formed into a channel, the channel of each strip being adapted to interengage with the channel of the other strip, one of the strips being secured to a window sash, and constituting thereby a movable strip, the other of said strips being secured to a window frame in which the sash operates and being fixed relatively to the aforementioned strip, fastening means penetrating the movable strip window sash for securing the strip in position on the sash, the fixed strip being kerfed into a window frame, the two strips mutually cooperating to allow relative expansion and contraction between the window sash and frame, and the fixed strip forming a bearing surface against which the movable strip and window sash operate as the window is opened and closed, the said strips being herfed in position, enabling the sash to be readily withdrawn from the frame, while eliminating use of fastening devices in po-- sition subject to strain and preventing entry of air behind the strip.

9. A Weatherstrip construction of the class de scribed for windows, comprising cooperating strips mounted on a window sash and frame, respectively, and forming relatively inverted channels having inter-engaging walls extending into each channel, the walls of one channel being in close engagement with and of much less depth than that of the space between the walls of the other, the said channels being of sufficient depth to allow for relative movement to a substantial. extent in a plane parallel with that of the sash to thus allow for expansion and contraction of the sash and frame while maintaining contact between the said walls.

10. A Weatherstrip construction of the class described for windows, comprising cooperating strips mounted on a window sash and frame, respectively, and bent to form oppositely extending U-shaped channels, having inter-engaging walls extending into each channel, selected walls be -g bent back upon themselves to provide a snug nt between the engaging channel walls, the said channels having sufficient depth to allow for a wide margin of relative expansion and contraction of the sash and equal to at least depth of the frame below the runway strip, while maintaining uninterrupted contact between the said walls.

11. A Weatherstrip construction of the character described for windows, comprising a sash strip and a runway strip, means for securing the sash.

strip to the window sash, the runway strip being kerfed into the window frame, the sash being recessed to receive the strips, the said strips being bent into cooperating channels having interengaging walls, the said securing means flatly holding the sash strip against the sash, the sash strip having eachlongitudinal extremity kerfed into the sash to relieve strain upon the securing means to prevent pulling thereof out of the sash as the sash moves, the aforesaid Weatherstrip construction enabling the sash to be readily removed from the frame, the strips becoming increasingly interlocked responsive to contractions of the sash in the plane of the sash, the runway strip remaining stationary.

12. A Weatherstrip construction especially designed to compensate and increase in efficiency proportionate with the increase in the extent of contraction of a window sash in the plane of the sash, the same comprising, in combination with a window frame and a sash therefor, a weatherstrip member comprising a base applied to the sash groove of the frame, a Weatherstrip comprising a base applied to the edge of the sash to cooperate with the first said Weatherstrip on the frame, said weatherstrips including rib members projecting from the base portions thereof in the plane of the sash and the rib portions having sliding side contact with said rib portions of the strips and the base portions being so associated that upon con raction of the sash in the frame the rib portions may slide upon one another and increase the extent of contact of said rib portions one with the other.

A Weatherstrip construction especialliy designed to compensate and increase in efficiency proportionate with the increase in the extent of contraction of a window sash in the plane of the the same comprising, in combination with window frame and a sash therefor, a weathertrip member comprising a base applied to the ash groove of the frame, a Weatherstrip comprising a base applied to the edge of the sash to cooperate with the first said Weatherstrip on the frame, said weatherstrips including rib members projecting from the base portions thereof in the p ane of the sash and the rib portions having s1 g side contact with said rib portions of the strips and the base portions being so associated that upon contraction of the sash in the frame the rib portions may slide upon one another and increase the extent of contact of said rib portions one with the other, one of said weather-strip rib portions being in channel form so as to receive the rib portion of the other strip to thereby provide an interlock between the two, and the head of the rib portion of one strip within the channel rib of the other being materially spaced from the innermost portion of the channel whereby to adrnit of the said sliding movement of the said rib portions on each other upon contraction and expansion of the sash in the frame.

i l. In combination with a window frame and window sash wherein the window frame, under certain conditions, tends to contract laterally to aiford clearance between the sash and frame, a Weatherstrip construction comprising a pair of members having cooperating surfaces disposed in nested relation, means for attaching said members to said sash and frame respectively, said members being of such a nature that contraction of said sash in a lateral direction increases the nesting of the members and increases the area of contact between the surfaces thereof.

affixed to the sash, a member affixed to the window, interengaging surfaces on said parts having a tongue and groove relationship, the tongue being normally spaced from the bottom of the groove under normal conditions and upon contraction of the sash moving toward the bottom of the groove.

HARRY HUSTON WHITE. 

